Details

Details

From Fonitronik:

Here we go again. This is the latest iteration of my version of the PS3100 Resonators. The fonitronik mh21 Triple Vactrol Resonator prototype module has been tranformed from SMT to through hole, suitable especially for Eurorack DIY.

But what is it actually? Basically the module incorporates three voltage controlled band pass filters with fixed bandwidth (resonators), using the Dual-Vactrol-based core from the PS3100, and a simple triangle core LFO. By setting the BPFs to different center frequencies and modulating them, we get these nice resonating sounds. Depending on the source waveform and the modulation it might even resemble the human voice. The original purpose, however, was to make string patches sounding more vivid.

Fonik's Triple Vactrol Resonators (for Eurorack DIY) features:

Three Band Pass Filters each with

Single input

CV input + attenuator potentiometer

Initial frequency potentiometer

LED

Single output

One summed output

One common Audio input (normalled to single inputs)

One LFO with

Reset (sync) input

Range switch (slow, fast)

Rate potentiometer

Output

The LFO is normalled to the 3 CV inputs, however, for the 3rd CV input the LFO signal can be inverted.